CLAIM: Miley Cyrus in Downward Spiral of “Partying, Boozing and Using Drugs”

According to “multiple sources” for the tabloid, the former “Hannah Montana” star is caught in a downward spiral of “partying, drinking and using drugs.”

One of these so-called sources for Star claims, “She pretends like she is this perfect little girl to the public, but behind closed doors, she is really messed up.”

Another supposed “insider” adds, “Miley has been partying and boozing a lot,” noting that the teen star “runs with a very shady, drug-using group.”

Star further alleges Cyrus’ behavior has gotten so out of control that friends “fear the pop star is on the road to disaster,” quoting one of the alleged sources as saying, “We are afraid Miley will overdose.”

But that’s not all.

The mag says the singer’s “bad-girl behavior” is also causing problems in her relationship with Liam Hemsworth.

Cyrus has allegedly been “less than loyal” to her beau, having acted “flirty” with pal Cheyne Thomas during a recent outing in L.A., says the tabloid.